Motorcycles Built in the Netherlands

Notes on some of the rarer Dutch marques

This page lists brands of which little historical information is currently available.
For a more complete listing visit the Netherlands Index.

A

ABSAFABSAF builds classic racing engines and components using modern materials and tooling. Riders using their enhancements have achieved considerable success throughout Europe, the UK and the United States.
Products include:

AGV CondorOriginally built by Jos Schurgers under Bridgestone sponsorship, in 1974 the Yamaha-powered 125cc road-racer passed to Henk van Kessel with AGV sponsorship. Later versions had an MBA engine in an LCR chassis. With Kessel at the helm the Condor placed 7th in the '74 125cc World Championship. For 1975 they took 4th in the GP series, achieving 3 podium places in the process. Van Kessel was 50cc World Champion in 1974.
Source: Wikipedia NL, kreidler.nl

Altena1902~1904
In April 1904, Andon Altena participated in the Paris-Bordeaux-Paris, and in August of that year he completed the English 1000-mile reliability ride, a "Six Day Trial". Effectively he won, finishing first most days, but due to penalties did not feature in the finals.
Sources: Conam Netherlands

AmstelMopeds manufactured by Hollandsche Motoren Fabriek in The Hague, 1951-1954 using mainly VAP engines.
There were at least two other companies using this name - Amstel of Naarden, and Amstel of Stokvis.
The brand was best known as a bicycle producer, and is discussed on the rijwiel.net site.
Source: Wikipedia NL

ArcoArco was a German company acquired by NV Arco Motorenfabriek of Amsterdam in 1927.
See: Arco

AroBuilt Victoria-powered autocycles in the post-war years. Thought to have been Dutch.
Source: Wikipedia NL

AvadaAbraham van Dam built autocycles and mopeds from 1950 to 1964. Initially the firm used Victoria Vicky engines, changing to HMW around 1953 and also adopting their frames. In 1956 they began using Italian frames and when HMW failed in 1960 they imported FBM Minarelli engines. 1962 saw a change to German engines, and in 1964 moped production ceased.
Source: Wikipedia NL

AvantiManufactured from 1973 by Jan van Tilburg, this was a cycle pacer fitted with Kreidler engines. They were also sold as Javanti, and some were fitted with Van Veen Kriedlers.
See also TilexSource: Wikipedia NL

B

BAJ RijwielenThe firm was established by Bernard Antonius Jansen in 1881 and soon began selling bicycles and tricyles, importing Sparkbrook products from Coventry in 1883 and from then until 1900 became very active in the cycling sport. Bernard died in 1932 and his son Theo took the reins, selling bicycles, automobiles and motorcycles. A keen rider, Theo won two Dutch championships, in 1923 and 1924.
Post-war, the firm built autocycles powered by Victoria engines.
Source: Wikipedia NL

BakkerBakker Framebouw, Donkereweg 1, 1704 DV Heerhugowaard, The Netherlands
Nico Bakker, an accomplished road racer, began building specials in 1971. The firm manufactures high-performance sports machines using single, twin and four-cylinder engines from many manufacturers.
See also Bakker GallerySource: bakker-framebouw.nl

BambinoThese were 3-wheel microcars built from 1955 to 1957 by the Hostaco firm in Rotterdam under licence from Fuldamobil. The firm may also have sold mopeds built by Ita of Winterswijk who marketed a Bambino.
Sources: Conam Netherlands, Wikipedia NL.

BarzoiOne of the many post-war motorised bicycles which appeared with Victoria engines, believed to be Dutch. There is a dubious report of another marque of similare name, the Borzoi, one of the myriad Spagthorpe spin-offs.
Source: Wikipedia NL

BMI1934 - 1937
Bilthovense Metaal Industrie, 22, Rembrandtlaan Bilthoven.
The first machine Beyermans built was a bicycle auxiliary engine, developed whilst working at another firm which did not show much interest in the project. He left and formed his own company where he produced 80cc engines which were housed in Sengers bicycle frames. These could be ordered complete or as separate components - Sengers were in the same street. Sales were not strong due to competition from the superior DKW RT98, but the engines were used in numberous other transport and industrial applications.
In 1937 a 175cc prototype motorcycle was developed but it did not enter production. The machine is believe to have been part of the Louwman Museum collection.
Sources: Conam Netherlands, De Nederlandse Motorhistorie ~ Piet Cornet.

Bos'sManufactured custom trikes in Weert with Volkswagen engines, the first of which was built in 1993.
Source: Wikipedia NL

BraveeSpeedway engines built during the post-war years in Hilversum by Van der Veer and Brakel
Source: Wikipedia NL

BricoA scooter built in Baambrugge in 1954 using a JLO engine, designed by M. van der Roer. Only one prototype is believed to have been built.
Source: Wikipedia NL

BSUThese sidecar cross outfits were built using KTM and other engines combined with components from a variety of suppliers. They were usually modified by the racing teams. BSU variants won the World Championship from 1998 to 2002.
Source: Wikipedia NL

Burgers 1906-1952, and possibly later.
Primarily a bicycle firm based in Deventer, they built motorcycles between 1906 and 1924, and resumed production in the 1930s. Postwar they built mopeds.
Early models used Fafnir engines, and 1920s models included 676cc JAP V-twins and 497cc Blackburne singles. Production resumed in the 1930s using Villiers, JLO and Sachs engines in lightweight motorcycles and mopeds. They also built electric motor-bicycles during this period. The 1950s machines were mainly Kuchen-powered autocycles.
A dark point in the firm's history was that one of their directors, Kilsdonk, was a member of the Dutch Nazi party. He was arrested for collaboration after the war.
It seems likely that the Burgers-Vitesse was a product of this firm. This was rebranded Sun motorcycle from the early years. See Sun MotorcyclesSources: Conam Netherlands, burgers-enr.net, Wikipedia NL, Roger Yates

C

Carley-RocherManufactured by M. Rocher, Constructeur, Usines a Cenon Vienne, Châtellerault
During the 1920s the Joop company built aircraft, and the first 49cc motorcycle appeared most likely in 1939. Post-war, development continued with an operational prototype around 1948. The Joops (father and son) formed a partnership with the French company M. Rocher which produced the machine from 1950 to 1952 as the Carley-Rocher. In 1955 the Joops built the Empo-Carley at the at Polynorm factory in Bunschoten. See EmpoSource: Wikipedia NL

CédéMotorcycles manufactured in Ruinerwold 1919-1920 by Generator- en Carburateurfabriek Cédé, a company which produced a range of products including heavy machinery.
Source: Wikipedia NL

D

DopperThe Dopper was a one-off built by Jan Dopper in 1903 or 04 and powered by a Brons diesel.
Condor Club Netherlands

DrescoEstablished in 1922 in Winschoten, the company produced bicycles for many decades. In the 1950s they built autocycles powered by Hemy engines, and later built moped components.
Source: Wikipedia NL

Duc BockDucati rider Ge van Bockel, Dutch 125cc Champion, imported and rebadged a number of Italian lightweights in the late 1950s which sold in the Netherlands and Belgium under the Duc Bok brand.
Condor Club Netherlands

E

EenhoornBuilt by Bingham & co, Rotterdam. who also built the Autolette.
Sources: Conam Netherlands

ElectrotaxBuilt three-wheel taxis. A version was also available for private individuals under the brand name 'International'.
Sources: Conam Netherlands

EGAA road-racing motorcycle built by Jan Eggens of Assen for the 1981 GP season, it was modeled on the the Kawasaki KR250 tandem twin. The inlet valves differed, allowing for a much more compact engine.
Henk van Kessel fitted it to a Bakker frame, and finished 22nd in class in the World Championship that year with a best result of 6th at the German GP. Eggens built more engines in the years following using components from MBA and Yamaha. He rode these single cylinder machines himself, and Hans-Jürgen Hummel rode one in 1988.N.B. There was also a German EGA marque built in the 1920s.
Source: Wikipedia NL

F

FamaConstructed by W. Gerth & Zn of Utrecht who traded from 1890 to 1956, their first motorcycles appeared around 1936 fitted with Villiers and Sachs engines of less than 100cc. Better known for its bicycles, the company also imported Zundapp machines which they marketed as Zundapp-Fama, 1938-1940. The name Fama is derived from the Roman goddess of fame.
There was also a Fama of Belgium, see Blomme & Lecompte.
Sources: Conam Netherlands

FongersFongers of Groningen was a pioneer of bicycle manufacturing, commencing in 1884. They built a V-twin motorcycle in 1909.
In 1961 the firm was acquired by the Leeuwarder company who manufactured Phoenix, and in 1963, Meppeler (Germaan) became part of the amalgamation, renamed to PFG. This firm was purchased by Batavus in 1970.
Fongers is well known in the art world for its excellent posters, and the bicycles are very popular with collectors.
Condor Club Netherlands

G

Goverse & Rotteveel of Le Hague built an autocycle powered by a Sachs 74cc engine in 1931-1932. Of the 10 or so produced, there is only one known survivor. The firm was established before WWI as a bicycle store, and sold their own brand of Edison machines. By 1930 they were trading as the Goverse Brothers selling DKW, Norton and Triumph motorcycles.

GebbenGebben Motoren in Staphors (Rouveen Rogat) was the firm of André Gebben, a former motocross rider. These Kreidler based 50cc off-road motorcycles appeared in 1968 and continued to be produced for some years.
Source: Wikipedia NL

Gebr. BaasWildervankster Rijwielen Fabriek, Wildervank, near Groningen
A bicycle manufacturer, they were one of the first Dutch companies to build a motorcycle, in 1903. It was single-speed belt-drive, which bicycle pedals and chain. The engine was embossed with the company name.
Source: mlagerwerf.wordpress.com

GMFManufactured by Gelderse Motoren Fabriek of Varsseveld throughout the 1950s, these were autocycles fitted with Boy auxiliary engines.
Source: Wikipedia NL

GrefaWout de Greef built a road-racing motorcycle using a Villiers engine in a Gillet frame for the 1951 season on which he won the the Dutch 125cc championship.
Source: Wikipedia NL

GrunoBased in Winschoten, the small bicycle firm produced the first Dutch motorcycle in 1899. That year they built a motor tricycle and a bicycle with a clip-on engine. By the 1900s they were building motorcycles marketed under the brands Gruno, Dreadnought and Nederlandsche Leeuw.
The firm had a very long lifespan and was linked with many other marques, including RAI (RI). It is understood that they may have built mopeds for RS Stokvis and Amstel in the 1950s.
N.B. There are several Dreadnought brands, the most famous perhaps being that of Englishman Harold Karslake, built in 1902. Another was from Birmingham, but there appears to be no other reference to a Dutch Dreadnought motorcycle so perhaps it was actually a bicycle.
Source: Wikipedia NL

H

HAMHA & MF of Haalem, known until 1902 as Altena, built cars and motorcycles from 1902 to 1907. It was forced to close due to the 1907 "panic", also referred to as a minor depression in 1906. Many other brands were similarly effected, including Spyker.
Source: Wikipedia NL

HarmsenConstructed by Carel Harmsen, the first of his machines was a 50cc road-racer with a monocoque frame which he named the Harmensen-Roton, in 1979. In 1984 he built his own 80cc engine.
Source: Wikipedia NL

HejaThe skills of Henk Yesger as a noted frame builder were applied to complete motocrossers from 1979 to 1982 using watercooled Sachs engines of 50cc and 80cc. Some of these are believed to have been sourced from Batavus.
Source: Wikipedia NL

HemeylaThese were 50cc road-racing motocycles built by Herman Meijer of Laren, Gelderland. Using Kreidler and other components he developed engines with different layout and his own crankshafts and crankcases through the 1960s and into the 1970s.
Source: Wikipedia NL

HermesBuilt motor bicycles in 1903.
Source: Wikipedia NLN.B. The name was also used by motorcycle-related companies in Germany, Britain and Sweden.

HervoHerbert van Oorschot of Rotterdam sold re-badged mopeds in the 1960s. His suppliers included Fongers and Phoenix.
Source: Wikipedia NL

HindeAlso known as Van Gink, the company was founded by GL van Gink in Amsterdam in 1888 and continued until 1938. In the early years they built motorcycles (or possibly tricycles) powered by De Dion 2hp engines, and after a long hiatus resumed motorcycle production using 98cc and 118cc engines in the latter half of the 1930s.
Sources: oudefiets.nl, benvanhelden.nl

Built motorcycles with JLO two-stroke 200cc singles and 250cc twin-cylinder engines, and mopeds in the 1950s sold under the Ranger brand. There was also a model fitted with a Myster engine sold as the Velonzo Bromzo most likely supplied by Velonzo-fietsenfabriek of Amsterdam. Hoenson also imported the Italian Gioiello.

HomoetBuilt by Chris Homoet from 1972 he built 50, 80 and 125 cc motocross machines using Kreidler and probably other engines.
More information at www.kreidlerdatabase.nl
Condor Club Netherlands

HuvoSpecialists in MBA and Minarelli road-racers and motocross machinery in the 1970s and 1980s. Their 80cc and 125cc motorcycles had numerous podium finishes in World Championship races. They also created their own machines, the Huvo-Casal, and fielded a team.
Source: Wikipedia NL

I

ItaManufactured by Italmotor CV of Winterswijk, and later Brofi CV of Hilversum.
Wim Timmer had assembled Typhoon mopeds for that company at the former Eysink factory in Amersfoort. This arrangement did not work out and Timmer moved back to Winterswijk in 1955, establishing the Italmotor company that year. Production of Ita mopeds began in 1956, probably using Bambino components or complete re-branded machines from Hostaco until 1957, at which time Ita production halted. Ita reappeared briefly in 1959, produced by Brofi CV.
Source: Wikipedia NL

J

JansonA rebadged Goliath three-wheeler from W.A. Janssens & Zn, Rotterdam. They also sold identical machines under the original Goliath name.
Sources: Conam Netherlands

JoknitelProduced in the early 1950s by Jan Jonker, these were autocycles which probably employed HMW-Fuchs auxiliary engines. Jonker was an HMW importer who later developed the first mopeds for HMW.
See also Jonker, below.
Source: Wikipedia NL

JonkerBuilt by Jan Jonker (related to HMW) in the mid-1950s. Two models were produced, both with JLO engines: a 200cc Condor single and a 250cc JLO twin (1955). The frames were by Helmond and the fuel tanks were made in Germany.
Condor Club Netherlands

Juncker JCRManufactured by Rijwielfabriek NV of Rotterdam from 1932 to 1935. The firm built bicycles, mopeds and lightweight motorcycles using engines of 50cc to 147cc from JLO, Victoria and Villiers.
N.B. There was another Juncker brand in Amersfoort, a bicycle factory located beside the Apeldoorn-Amersfoort railway line. This firm took over part of the Burgers concern when it folded in 1961. This is mentioned here as there is a note that the Magneet Globemaster of 1961 was also sold as a Junckers.
The was also a Juncker in France in the 1930s, see Juncker, Mulhouse.
Source: Wikipedia NL

K

Kaptein1949-1973
Founded by Willem Kaptein in 1922 as a bicycle repair shop, by 1925 he was an importer of Ariel and later dealt in Calthorpe, Imperia, Puch, Norton, Husqvarna, TWN and possibly others.
He took over the import licence for Motobécane in 1938 and met considerable, if all too brief, success.

Post-war, he established a factory in a ruined power station in Arnhem where he built 125cc and 175cc machines with SV and OHV engines of his own manufacture, under licence from Motobecane. The motorcycles were closely based on the Z2c and D45A.
Production of those machines ceased in 1951, whereupon they once more imported Motobécane. They are credited with developing the immensely succesful Mobylette. These they produced in a new factory until 1965, and marketed as Kaptein. From then until c1973 all of their mopeds were imported from France and rebadged.
Condor Club Netherlands, Motorpaul NL

L

LelyP. vd Lely, Stille Veerkade, Le Hague
The firm built automobiles in 1900. Later they built a variety of three-wheel transports and at least one moped. Invalid three-wheelers were also a speciality, and these were built as early as 1936 and 1956 advertisement describes 12 different commercial vehicles including powered tricycles and a moped, model 116a, with front carrier. Production ceased in 1979.
Sources: Conam Netherlands

LimoM. van der Putten of Tiel is believed to have used chassis and engines sourced from Rex of Munich, with fuel tanks and other tinware from Meppel. These mopeds were built in 1952 and 1953. He also experimented with a Gasqui engine.
Source: Wikipedia NL

LocomotiefBased in Amsterdam, the firm built bicycles from 1929 and introduced their first mopeds in 1957. These had Pluvier and Sachs engines, and were built until the early to mid 1960s. The firm had undergone a number of changes during this period, having merged with Simplex in 1952, then Juncker in 1965, then VAR in 1968 and later with Gazelle.
Source: Wikipedia NL

M

MaxwellManufactured by Maxwell Rijwielfabriek A. Druyf & Co.
Oudezijds Voorburgwal 131, Amsterdam
Triporteurs and motorcycles with Gillet engines were marketed in the 1930s which were likely to have been re-badged Gillet-Herstal machines. From 1954 to the early 1960s they marketed mopeds with HMW engines.
Source: Wikipedia NL

MetzAmsterdam firm which produced autocycles in the 1920s, and possibly a motorcycle.
Source: Wikipedia NL

MFBManufactured by Motors Fabriek Bah of Baarn, and then Soest.
The company produced autocycles powered by the Victoria FM38L engine from around 1949, and later sold Victoria Vicky mopeds produced under licence. Production ceased in 1958 .
Source: Wikipedia NL

MotormeyerAlso known as MM, these scooters first appeared at the RAI (Amsterdam Motor Show) in 1953, described as a "Volksscooter". It is likely that it was the rebadged product of another manufacturer.
Source: Wikipedia NL

MZ J.K. van der Molen of Groningen presented a scooter in 1952 powered by a Varel engine. A second machine appeared the following year named Varelli - this was a re-badged Varel machine.
Source: Wikipedia NL

N

NorelliBespoke customs powered by Suzuki Intruder engines, built in Apeldoorn during the mid to late 90s.
Source: Wikipedia NL

O

Otten1902, Otten's motor, Breda
Some 12 of these machines were built by the brothers Otten including one Ladies model ridden by their sister of whom it was written she "made Breda unsafe", possibly because the motorcycles could reputedly achieve 80-90 km/h and she was a leadfoot.
Sources: Conam Netherlands

Manufactured in Leeuwarden in the early 1960s in cooperation with Fongers and Germaan who all sold the same moped under their own brand. The Phoenix catalogue for 1964 gives the address as Groningen and states that the firm had been in business for 60 years.

The machines were produced by Germaan, and all three firms amalgamated with Batavus.

PJKPieter Jan Kusse held one of the many licences issued to install Victoria FM38L engines in autocycles late 1940s early 1950s.
Source: Wikipedia NL

PluvierSee Berini

PostIn 1953 NV Rubicon Rijwiel- en Motorenfabriek of Apeldoorn presented one of three scooter models they announced at the RAI of 1953, but at the following years' Brussels Motor Show they were not present.
Source: Wikipedia NL

PrimariusBased in Meppel, the company built mopeds with a Rex engine in the 1950s.
Source: Wikipedia NL

R

RB ProjectsCor van Reeuwijk and Bram Bijl built road-racing machines from 1985 until the end of the 80s. Their RB1 was an endurance racer with single-sided suspension front and rear powered by a Kawasaki 600 engine, campaigned for three seasons by Peter van Andel who achieved two Dutch Natinal Championship aboard it.
The RB2 was a 750cc version which competed in the TT Formula 1 World Championship, raced by Mile Pajic. The firm also produced designs for a 125cc roadgoing machine and a 500cc GP bike.
Source: Wikipedia NL

RiwaDutch road racer Aalt Toersen and Rieks van der Wal built a 50cc production racer using a Kreidler engine, laterer building a series of a Kreidler-powered grass track machines and motocrossers with Honda engines. Van der Wal also tuned racing machines with Gebben.
Source: Wikipedia NL

RotonTon Daleman of Leiden built 50cc road-racers in the 1960s and 70s using engines from the likes of Itom, Royal Nord, Garelli and Kreidler. These he modified with a rotary inlet valve, hence the name - Roterend Ton.
Source: Wikipedia NL

Royal ExpressMopeds built in Le Hague in the 1950s using 49cc Gasquy engines.
Source: Wikipedia NL

S

Schwager's Rijwielen was a motorcycle manufactured by F.F. Schwager at Geertekerkhof 12, Utrecht in 1903 using their own engines.

The company was established in the 1880s to build machines for canal construction, and entered the bicycle trade in 1894. These attained very high quality and were beautifully presented in their catalogues. 1903 saw the first production of motorycles which used Austrian engines and marketed under the Sfinx brand. Although praised in the press, they were not a commercial success and production ceased in short order.

Shelter3-wheel Microcars
1950s, and possibly as late as 2016
Sources: Conam Netherlands

SinamecManufactured by Machinefabriek Mechanica in Delft from 1949 to 1951, these were bicycle attachments using a 38cc engine by F. Spangler which could be mounted to an existing rim or were available fitted to a reinforced bicycle wheel. The main financier died in 1951 and that year the company ceased production.
Source: Wikipedia NL

SittorManufactured at Hartelustlaan in Bloemendaal, these scooters used a Fuchs engine with a top speed of 40 km/h. They appeared around 1947.
Source: Wikipedia NL

SpeedwheelNV EFA-Produka of Amsterdam produced a bicycle attachment engine developed by JJ Geesink and son in 1948, and the following year a heavilly modified version with a 38cc engine appeared. In 1951 the name changed to Wingwheel and was built by Kromhout in Weesp.
Source: Wikipedia NL

SuccessBuilt by Klaas Baving from 1904, the first models had a Fafnir engine. The firm was acquired by Ackman in 1914, but the Success brand was still advertised in 1916. The marque is referred to elsewhere as "Succes" but neither name is in Tragatsch, nor in Henshaw.
Sources: Conam Netherlands, Wikipedia NL.

T

TiffanyAn autocycle marketed by Italjet in the Netherlands, it was powered by a Piaggio 49cc engine.
Source: Wikipedia NL

TilexManufactured 1947-1949 by Jan van Tilburg and Aad van Exel, they were responsible for a type of telescopic fork before developing a moped, and also raced machines under the Tilex brand powered by 125cc engines from DKW, Villiers and others. Jan van Tilburg also built the Javanti bicycle pacer.
Source: Wikipedia NL

TopresThese were clip-on engines built by father and son team Oosterwijk of Gouda circa 1956. The engine was front-mounted and drove a roller via a chain. Although well priced it was not a commercial success.
Source: Wikipedia NL

TrackDevelopment of the diesel-engined motorcycle began in 2006. Erik Vegt of EVA Products developed rally motorcycles. He used this type of machine fitted with a three-cylinder lightweight diesel. Around 2009 the name changed to Track, and development continued through to 2013. Although a fine motorcycle, customers were scarce.
Source: Wikipedia NL

U

V

VedehaManufactured by the van der Heijden brothers in 1973, Bultaco importers, the motorcycle was an off-roader with a 125cc Sachs in a frame constructed using Reynolds 531 tubing.
Source: Wikipedia NL

Max Velleman of Prins Hendrikkade, Amsterdam, built very basic mopeds built in the 1950s using Myster engines in a frame with undamped front suspension and rigid rear. There was also an electric bicycle, the Velenzo Velectro, around 1955.

Otto Dik founded his bicycle firm in Haarlem and built mopeds in the 1950s, constructed with HMW engines in Paperino frames. Another of his machines was the 1956 Vesting Corsa with a Demm engine - it may actually be a rebadged Demm. He also marketed Galletti scooters under the Vesting banner.

N.B. The Vesting logo is a fortified castle. The English translation of vesting is fortress.

ViscometaManufactured by Wim Visser and JC de Heer, these were 48cc bicycle engines which were positioned above the front wheel. The first machines were presented in 1948, and they announced plans for a new factory in 1950, which did not eventuate. One or perhaps two prototypes were built.
Source: Wikipedia NL

VulcaanVulkaan Motorrijwielfabriek, Gebr. Fonck, Hofstraat 6 te Venray (1911-1915).
They used Zedel 264cc and 299cc SV engines and later built their own V-twins using components from Zedel with whom they had a close relationship. After the start of WWI Zedel engines became unobtainable, and Moser units were used. Production ceased in 1915 or 1916 after some 300 motorcycles were constructed.
N.B. Tragatsch gives dates of 1911-1927.
Sources: Conam Netherlands, Tragatsch.

W

WereldThe firm built autocycles using Victoria engines in the early post-war years, and also built the Wereld Merite moped fitted with a Vimer engine
Source: Wikipedia NL

WestorThe bicycle company dates back to the turn of the 20th century. In the early 1950s they constructed autocycles using Victoria engines, as did some 15 other firms with the same licence. The firm's bicycle factory was later sold to Simplex NL, but they continued to trade until 1972.
Source: Wikipedia NL

WEVOThese were bicycle pacers constructed as replacements for Derny using Sachs engines. Around ten of these were produced by De Jong and Co (Joco), a bicycle facotry in Amsterdam.
Source: Wikipedia NL

WilcoMotorcycle dealer Martinus Willink of Enschede built lightweight motorcycles fitted with Sachs 98cc engines from 1948 to 1950. Some 50 to 100 of these machines are believed to have been produced.
Source: Wikipedia NL

WingwheelThis was an autocycle built around 1950 with the engine mounted within the front wheel. It was probably delivered in kit form, with complete wheel assembly, fuel tank and controls.
Source: Wikipedia NL

Z

ZwaluwManufactured by the Brothers Benschop who ran a bicycle factory in IJsselstein. Information on this one is scarce, but it is thought that they produced a Minerva-powered tricycle in the early 1900s based on one of their commercial three-wheeled bicycles.
Source: Wikipedia NL. It is not mentioned in Tragatsch.